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Figure 1: ISO-SWS spectra of the lines detected in NGC 6240. Some of the ranges from which important upper limits are derived are also shown. |
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Figure 2:
Infrared spectral energy distribution of NGC 6240 from
ISO observations. Continuous lines show the ISOCAM-CVF and LWS spectra,
histograms the ISOPHOT-S spectrum. Small crosses indicate continua
from the SWS spectra at >![]() |
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Figure 3: Fine-structure emission line ratios for NGC 6240, compared to a number of bright AGN from Sturm et al. (2002), the starbursts of Verma et al. (2003, excluding low metallicity dwarfs), and the supernova remnants IC 443 and RCW 103 (Oliva et al. 1999a,b). The overplotted grid represents simple mixing by a linear superposition of starburst, SNR, and AGN line spectra. The loci of the grid lines indicate where the contribution to [Ne II] is 0%, 10%, 20%, ... for supernova remnants and for AGN. The percentage contribution to other lines will be different. Note that the four leftmost AGN themselves have evidence (PAH emission) for significant star formation inside the SWS beam. |
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Figure 4: H2 excitation diagram for NGC 6240, showing for the lines observed with SWS the upper level population divided by the level degeneracy, as a function of upper level energy. The level populations are derived from observed fluxes without extinction correction. |
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Figure 5:
Low resolution ISOCAM 5-16 ![]() |
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